(b) No person, firm, association of persons or corporation shall sell or offer for sale as lubricating oil, any oil that has been rerun, refiltered, reclaimed or refined from crank case draining or any other oil that has been theretofore used for purposes of lubrication, unless the said oil is sold as and labeled "Reconditioned Motor Oil". The words "Reconditioned Motor Oil" shall be plainly and legibly printed on each container, which said lettering shall be imprinted in two (2) places on the container or label in a manner that said lettering will appear both on the front and back surface of the container when displayed to the public in sale displays, and which said lettering shall be in letters of not less than three-sixteenths (3/16) of an inch in height and not less than one-sixteenth (1/16) of an inch in the width of each line used to form said letters.

(c) No person, firm, association of persons or corporation shall sell at retail, or offer for sale at retail, as gasoline or motor fuel to propel motor vehicles upon the roads, streets and highways of Texas, either alone or when blended with other products, any unrefined liquid, substance or residuum of natural gas formed in and extracted or expelled in its natural state from any pipe line or tank conveying or containing natural gas, unless the said liquid, substance or residuum sold at retail or offered for sale at retail in its unrefined state is labelled as "Drip Gasoline," and all pumps, receptacles, tanks or containers of any retail service station through which such drip gasoline may be sold or offered for sale to propel motor vehicles upon the roads, streets and highways of Texas, either alone or when blended with other products, shall be labelled in plain, legible lettering in full view of the public, with letters of solid black type not less than two (2) inches in height and one half (1/2) inch in width with the words "Drip Gasoline." Provided that nothing herein shall be construed as requiring the labelling of any derivative of natural gas which has been refined into an appropriate blending material free of dirt, oil and other suspended matter.

Acts 1919, p. 213. Amended by Acts 1933, 43rd Leg., p. 94, ch. 46, Sec. 3; Acts 1935, 44th Leg., p. 396, ch. 154, Sec. 3; Acts 1951, 52nd Leg., p. 148, ch. 88, Sec. 1; Acts 1955, 54th Leg., p. 1038, ch. 393, Sec. 1.